Using data from an online research, we documented the prevalence of cyberviolence among high school students in France. We analysed the association of cyberviolence with violence in schools and the perception of school climate. In 2014, 14,916 students completed an online survey assessing cybervictimization, school climate and victimization. The results suggest that 15.6 % of students reported cyberviolence during the school year. Repeated cyberviolence affected few students (4.4 %) but these have a significant negative impact on the perception of school climate, and more particularly for male students. Male students are more repeatedly victimised than females and are significantly more negative in their perceptions of school climate. Victimization in schools explains 32,2 % of the variance in school climate.